CN107988485A - A kind of quick-dry type binding agent and its application method suitable for iron scale class coal-pressing ball - Google Patents
A kind of quick-dry type binding agent and its application method suitable for iron scale class coal-pressing ball Download PDFInfo
- Publication number
- CN107988485A CN107988485A CN201711262887.1A CN201711262887A CN107988485A CN 107988485 A CN107988485 A CN 107988485A CN 201711262887 A CN201711262887 A CN 201711262887A CN 107988485 A CN107988485 A CN 107988485A
- Authority
- CN
- China
- Prior art keywords
- quick
- dry type
- binding agent
- pressing ball
- iron scale
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Classifications
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/242—Binding; Briquetting ; Granulating with binders
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/248—Binding; Briquetting ; Granulating of metal scrap or alloys
Abstract
The component disclosed by the invention for being a kind of quick-dry type binding agent suitable for iron scale class coal-pressing ball of metallurgical solid waste technical field of comprehensive utilization, including following mass percent：Alphalysed starch：8%~12%, technical grade carboxymethyl cellulose 2%~3%, anhydrous magnesium chloride：28%~32%, sodium bentonite：55%~60%.The beneficial effects of the invention are as follows：Can be in the case where spontaneously drying process conditions so that the shaping of pelletizing rapid link using the quick-dry type bonding agent of the component, eliminate the baking process process of complexity, save the energy, reduce pollution, and the speed of coal-pressing ball early stage natural drying can be accelerated, ensure the requirement of pellet strength and moisture in a short time.In addition this kind of quick-dry type binding agent also has certain cost advantage, can be effectively iron and steel enterprise's cost efficiency under the stagnant background of current steel industry.
Description
Technical field
The present invention relates to metallurgical solid waste technical field of comprehensive utilization, more particularly to one kind to be suitable for iron scale class
The quick-dry type binding agent of coal-pressing ball.
Background technology
Existing most domestic steel mill all selects iron scale, the iron content dedusting ash that will be produced in production process
Wraparound stove is recycled after carrying out pressure ball (block) processing etc. solid waste, this kind of Land use systems can not only be recycled effectively
Iron in solid waste resource, and this kind of cold-pressing balls (block) product also has certain metallurgical function, such as smelting slag making, splash slag shield
Stove, cooling etc..
The ball press technique of the solid waste such as processing iron scale, iron content dedusting ash mainly has two big directions, when
Drying process is toasted after pressure ball, second, spontaneously drying technique after pressure ball.Shaping and intensity in both techniques to pelletizing rise
The mainly pelletizing molding adhesive of decisive role, its main function are to produce viscosity after making raw material, binding agent and water mixing,
By ball press cold moudling, the cohesive force produced after binding agent drying is recycled to ensure the later strength of pelletizing.It is cold at present
Two process orientations of pressure ball group cut both ways, and baking drying process is to carry out baking drying to pelletizing after pelletizing shaping, its energy
It is enough to ensure that binding agent gives full play to cementation well so that the intensity of pelletizing quickly improves, but baking process needs to disappear
The energy such as substantial amounts of coal, coke and coal gas are consumed, production cost is higher and has certain environmental pollution；And spontaneously dry technique
Then energy free consumes, but the rate of drying of pelletizing causes the effect of binding agent to play the speed bad, intensity improves compared with slow-motion
Degree is slow, and the water content of pelletizing cannot be reduced effectively so that the big heavy discount of metallurgical effect of product, and the natural drying of demand
Place is also bigger.
The content of the invention
The deficiencies of to overcome existing pelletizing molding adhesive to need long-time rapid draing to cause pelletizing stability poor, this hair
It is bright the technical problem to be solved is that：There is provided one kind can make iron scale, iron content dedusting ash class coal-pressing ball rapid shaping with
Dry quick-dry type binding agent.
The technical solution adopted by the present invention to solve the technical problems is：
A kind of quick-dry type binding agent suitable for iron scale class coal-pressing ball, includes the component of following mass percent：
α-change starch：8%~12%, technical grade carboxymethyl cellulose 2%~3%, anhydrous magnesium chloride：28%~32%, Na-bentonite
Soil：55%~60%.
It is further that the technical requirement of the α-change starch is：Viscosity (6% aqueous solution) 600~1000Mpa
S, pH value (1% aqueous solution) 6~8, fineness (passing through 100 mesh sieves) >=95%, ash content≤0.4%, moisture≤8%.
It is further that the technical requirement of the anhydrous magnesium chloride is：MgCl2Content >=98%, fineness (pass through 80
Mesh sieve) >=95%.
It is further the sodium bentonite technical requirement：Smectite content 60%~88%, moisture≤
12%th, green compression strength >=0.23Mpa, Na2O content >=1.28%.
This is suitable for the application method of the quick-dry type binding agent of iron scale class coal-pressing ball, mixes and makes according to said ratio
Adding proportion is controlled 3.5%~5% the quick-dry type pellet binder obtained by mass percentage in use, in pelletizing
Amount of water control is 6%~8% during cold moudling agitating procedure, to ensure excellent balling property.
The beneficial effects of the invention are as follows：It can be made using the quick-dry type bonding agent of the component in the case where spontaneously drying process conditions
The shaping of pelletizing rapid link is obtained, eliminates the baking process process of complexity, the energy is saved, reduces and pollute, and can accelerate cold
The speed that pressure ball group spontaneously dries early stage, ensures the requirement of pellet strength and moisture in a short time.In addition this kind of quick-dry type glues
Knot agent also has certain cost advantage, under the stagnant background of current steel industry, can effectively be dropped for iron and steel enterprise
This synergy.
Embodiment
With reference to embodiment, the present invention is further described.
A kind of quick-dry type binding agent suitable for iron scale class coal-pressing ball of the present invention, including following quality hundred
Divide the component of ratio：α-change starch：8%~12%, technical grade carboxymethyl cellulose 2%~3%, anhydrous magnesium chloride：28%~
32%th, sodium bentonite：55%~60%.
In order to reach optimal quick-drying adhesive property, each component is preferably chosen by following index request：α-the change
The technical requirement of starch is：Viscosity (6% aqueous solution) 600~1000Mpas, pH value (1% aqueous solution) 6~8, fineness
(passing through 100 mesh sieves) >=95%, ash content≤0.4%, moisture≤8%；Carboxymethyl cellulose (technical grade) technical indicator will
Ask and meet national sector standard；The technical requirement of the anhydrous magnesium chloride is：MgCl2Content >=98%, fineness (pass through 80
Mesh sieve) >=95%；The sodium bentonite technical requirement：Smectite content 60%~88%, moisture≤12%, wet pressing are strong
Degree >=0.23Mpa, Na2O content >=1.28%.
The above-mentioned raw material to meet the technical requirements are subjected to dispensing according to aforementioned proportion during preparation 5min is mixed
Quick-dry type pellet binder is made, for the binding agent it should be noted that moisture-proof in transport and storage process, the storage time limit is not to be exceeded 1
Month.
When specifically used, adding proportion should in use for the quick-dry type pellet binder that said ratio is mixed to prepare
Control is more than 3.5%, in order to ensure that Optimum cost suggests that adding proportion is no more than 5%；In pelletizing cold moudling agitating procedure
During amount of water should control 6%~8%, to ensure excellent balling property.
Using α-change starch and carboxymethyl cellulose as main component in above-mentioned quick-dry type binding agent, molding bonded is played
Effect, is aided with the original shaping performance that sodium bentonite can improve pelletizing, α-change starch and carboxymethyl cellulose are in cold-pressing balls
Applied in group's moulding process also has with the higher viscosity advantage low with additive amount, sodium bentonite as filler material is bonded
Excellent performance and cost is relatively low；Anhydrous magnesium chloride can occur quickly to dissolve in coal-pressing ball raw material adds water whipping process,
Substantial amounts of heat can be released, can ensure coal-pressing ball initial temperature in the case of above-mentioned additive amount more than 50 DEG C, and
And the chlorion produced after anhydrous magnesium chloride dissolving can accelerate the oxidation of metallic iron in iron scale, constantly release heat and cause
Pelletizing temperature in stacking process constantly raises, and ensure that the rate of drying of pelletizing.In addition the metallic iron in iron scale is fast
Iron oxide that can be in pelletizing in fast oxidizing process is in netted, greatly increases the later strength of pelletizing.
With reference to embodiment, the invention will be further described, but does not therefore limit the present invention to the implementation
Among example scope.
Embodiment one
Quick-dry type coal-pressing ball binder formula is shown in Table 1 in embodiment.
Quick-dry type coal-pressing ball binder formula in 1 embodiment of table
| Material name | Proportioning, % |
| α-change starch | 8 |
| Carboxymethyl cellulose (technical grade) | 2 |
| Anhydrous magnesium chloride | 32 |
| Sodium bentonite | 58 |
Raw material technical requirement meets the requirement in the content of the invention.
It is mixed according to the formula in table 1 and quick-dry type pellet binder I types is made, is applied in A steel mills, the steel mill
Original is baking-type binding agent with organic binder bond M types.Wherein A steel mills coal-pressing ball raw material proportioning is as follows：
Hot (cold) rolls iron scale：50%
Dedusting steel-smelting converter ash：30%
Converter extracting vanadium dedusting ash：20%
The quick-dry type coal-pressing ball binding agent of additional total raw material weight 4% adds water to stir after proportioning mixes raw material more than
Mix, amount of water is controlled in 6%~8%, mixing time 5min, carries out pressure ball to raw material, its associated production data is shown in Table 2.
Coal-pressing ball creation data in 2 embodiment of table
Data can be seen that from table 2, and coal-pressing ball production factors data increase, and economic benefit is obvious.
In conclusion coal-pressing ball quick-dry type binding agent provided by the present invention is suitable for iron scale, iron content dedusting ash
Class coal-pressing ball, has the advantages that good forming effect, pelletizing fast drying, intensity improve speed is fast, cost is low etc..Its spontaneous heating, add
The advantages such as fast rustization reaction cause the production of coal-pressing ball to abandon traditional pelletizing baking process, have not only saved the energy, and
And have good effect for environmental protection, meet national green, the policy of circular economy, have a extensive future.
Claims (5)
1. a kind of quick-dry type binding agent suitable for iron scale class coal-pressing ball, it is characterized in that, including following mass percent
Component：α-change starch：8%~12%, technical grade carboxymethyl cellulose 2%~3%, anhydrous magnesium chloride：28%~32%, sodium
Base bentonite：55%~60%.
2. a kind of quick-dry type binding agent suitable for iron scale class coal-pressing ball as claimed in claim 1, it is characterized in that：Institute
The technical requirement for stating α-change starch is：Viscosity (6% aqueous solution) 600~1000Mpas, pH value (1% aqueous solution) 6~
8th, fineness (passing through 100 mesh sieves) >=95%, ash content≤0.4%, moisture≤8%.
3. a kind of quick-dry type binding agent suitable for iron scale class coal-pressing ball as claimed in claim 1, it is characterized in that：Institute
The technical requirement for stating anhydrous magnesium chloride is：MgCl2Content >=98%, fineness (passing through 80 mesh sieves) >=95%.
4. a kind of quick-dry type binding agent suitable for iron scale class coal-pressing ball as claimed in claim 1, it is characterized in that：Institute
State sodium bentonite technical requirement：Smectite content 60%~88%, moisture≤12%, green compression strength >=0.23Mpa,
Na2O content >=1.28%.
5. the quick-dry type suitable for iron scale class coal-pressing ball as described in Claims 1 to 4 any one claim glues
The application method of agent is tied, it is characterized in that：The quick-dry type pellet binder being mixed to prepare according to said ratio in use by
Mass percent meter adding proportion is controlled 3.5%~5%, and amount of water, which controls, during pelletizing cold moudling agitating procedure exists
6%~8%, to ensure excellent balling property.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711262887.1A CN107988485B (en) | 2017-12-04 | 2017-12-04 | Quick-drying binder suitable for iron oxide scale cold-pressed pellets and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711262887.1A CN107988485B (en) | 2017-12-04 | 2017-12-04 | Quick-drying binder suitable for iron oxide scale cold-pressed pellets and use method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107988485A true CN107988485A (en) | 2018-05-04 |
| CN107988485B CN107988485B (en) | 2019-12-17 |
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| CN201711262887.1A Active CN107988485B (en) | 2017-12-04 | 2017-12-04 | Quick-drying binder suitable for iron oxide scale cold-pressed pellets and use method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109536704A (en) * | 2018-12-03 | 2019-03-29 | 攀枝花钢城集团有限公司 | Steel-making enrichment sludge complex adhesive and its preparation and application |
| CN111020182A (en) * | 2019-12-24 | 2020-04-17 | 兰州申马节能环保科技有限公司 | Composite metallurgical pellet binder, cold-pressed pellet containing same and preparation method thereof |
| CN112931252A (en) * | 2021-03-22 | 2021-06-11 | 黑山县万程膨润土有限责任公司 | Bentonite cat litter capable of flushing toilet and preparation method thereof |
| CN114774683A (en) * | 2022-04-21 | 2022-07-22 | 宝武集团环境资源科技有限公司 | System and method for resource utilization of iron-zinc-containing dust mud |
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| US3653878A (en) * | 1969-07-16 | 1972-04-04 | Yo Jonghe | Cold and hot rolling process of scrap cars for producing a compact steel mass |
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| CN105714108A (en) * | 2014-12-01 | 2016-06-29 | 鞍钢股份有限公司 | Pellet binder and pellet produced therefrom |
| CN106086398A (en) * | 2016-05-09 | 2016-11-09 | 江苏省冶金设计院有限公司 | Coal-pressing ball compound binding agent and the method being used for smelting slag molding |
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Patent Citations (5)
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| US3653878A (en) * | 1969-07-16 | 1972-04-04 | Yo Jonghe | Cold and hot rolling process of scrap cars for producing a compact steel mass |
| CN101270410A (en) * | 2007-03-20 | 2008-09-24 | 尚国洪 | Cold bonded pellet and method of producing the same |
| CN105714108A (en) * | 2014-12-01 | 2016-06-29 | 鞍钢股份有限公司 | Pellet binder and pellet produced therefrom |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109536704A (en) * | 2018-12-03 | 2019-03-29 | 攀枝花钢城集团有限公司 | Steel-making enrichment sludge complex adhesive and its preparation and application |
| CN111020182A (en) * | 2019-12-24 | 2020-04-17 | 兰州申马节能环保科技有限公司 | Composite metallurgical pellet binder, cold-pressed pellet containing same and preparation method thereof |
| CN112931252A (en) * | 2021-03-22 | 2021-06-11 | 黑山县万程膨润土有限责任公司 | Bentonite cat litter capable of flushing toilet and preparation method thereof |
| CN114774683A (en) * | 2022-04-21 | 2022-07-22 | 宝武集团环境资源科技有限公司 | System and method for resource utilization of iron-zinc-containing dust mud |
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| Publication number | Publication date |
|---|---|
| CN107988485B (en) | 2019-12-17 |
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